October 31 - November 1 - Co-Located Events
October 28-30 - Conference
Lyon Convention Centre - Lyon, France
More information for Open Source Summit + Embedded Linux Conference Europe 2019
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Tuesday, October 29 • 15:15 - 15:50
The Linux Capabilities Model - Michael Kerrisk, man7.org Training and Consulting

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Capabilities are an attempt to mitigate the problems that result from the crude granularity of the traditional UNIX/Linux privilege model, by breaking the power of superuser into pieces which can be
individually assigned to executables.

Capabilities have been present on Linux for many years, but they remain poorly understood. And though capabilities are used by many well known pieces of software, it is probably fair to say that they are less used than the original developers may have hoped. Nevertheless, they can be used to make privileged executables that are safer than traditional set-UID-root programs.

In this talk, I'll describe the Linux capabilities model, looking at how capabilities are attached to executable files, and the rules that determine how a process's capabilities transform when it executes a
file. I'll also consider some of the problems of capabilities that have hindered their adoption as well some remaining problems in their implementation.


Michael Kerrisk

Trainer/writer/programmer, http://man7.org/
Michael Kerrisk is the author of the acclaimed book, "The Linux Programming Interface" (http://man7.org/tlpi/), a guide and reference for system programming on Linux and UNIX. He contributes to the Linux kernel primarily via documentation, review, and testing of new kernel-user-space... Read More →

Tuesday October 29, 2019 15:15 - 15:50
Salon Pasteur
  • Session Slides Included Yes